Wood-cutting machine



(No Model.)

W. P. HUTOHINSON.

WOOD CUTTING MACHINE.

No. 529,386. Patented Nov. 20, 1894.

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embodying my invention.

IVILLIAM F. HUTOHINSON, OF PASSAIO, NEYV JERSEY.

WOOD-CUTTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 529,386, dated November20, 1894.

Application filed October 3, 1893. Serial No. 437,121. (No model.)

T 0 all whom it may concern.-

Be it known that I, WILLIAM F. HUToHIN- SON, of Passaic, in the countyof Passaic and State of New Jersey, have invented certain new and usefulImprovements in \Vood-Outting Machines, of which the following is afull, clear, and exact description.

My invention relates to that class of ma chines which are used forcutting long strips of veneer into short lengths or blocks, and mypresent invention is an improvement on the machine shownin LettersPatent of theUnited States No. 507,499, dated October 24, 1893. Inmachines of this class the strip of veneer to be cut is fed between arevoluble cylinder having projecting peripheral knives and a bearingdrum against which the knives project. As a result the severed wood isjammed firmly between the knives of the cutting drum and ejectingmechanism has to be employed for throwing the material from between theknives. My present invention relates wholly to ejecting mechanism forthis purpose, and the object of my invention is to produce an ejectingmechanism which is applicable to any rotary cutter of the class namedand which operates positively and automatically to push the severed woodfrom between the knives.

To this end my invention consists of certain features of constructionand combinations of parts, as will be hereinafter described and claimed.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar figures of reference indicatecorresponding parts in all the views.

Figure 1 is a front elevation of the machine Fig. 2 is a vertical crosssection on the line 2-2 of Fig. 1. Fig. 3 is a broken side elevation ofthe ejecting cylinder. Fig. 4 is an end View of the cylinder. Fig. 5 isa detail of the bolt on which the bearing rollers of the ejectingcylinder are journaled. Fig. 6 is a detail side elevation and plan ofone of the bearing rollers. Fig. 7 is a broken detail view, showing aside elevation, inverted plan, and an end view of one of the ejectingrods or bars of the cylinder, and Fig. 8 is a detail side elevation andend view of the fastening screw to secure the bars or rods to thecylinder ends.

The machine is provided with a suitable frame 10, in which is journaledlongitudinally a shaft 11, carrying a cylinder 12 having projectingperipheral spaced knives 13 which register with grooves 14 in a bearingdrum 15, and the latter is carried on the shaft 16 which is journaled inthe machine frame above the cutting drum and parallel therewith. Theknives 13 may be held in any convenient way to the cutting drum and, sofar as my invention is concerned, it is not necessary to have thebearing drum provided with grooves.

The veneer or wood strips which are out are fed between the bearing drumand cutting drum, so that the pressure of the knives 13 on the wood willsever it, and it will be seen that the pressure requisite to cut thewood forces it very firmly between the knives. To force it out I employan ejecting cylinder 1'7, which is of larger diameter than the cuttingdrum and which is provided with circular open ends 18 and the body ofwhich has parallel bars 19 adapted to lie between the knives of thecutting drum. These bars 19, as illustrated, are recessed on their undersides, as shown at 20, to enable them to lie snugly on the end pieces18, and they are $6- curely fastened to the end pieces by screws 21 orequivalent fastenings.

I have shown the rods or bars 19 and the cylinder ends separable, but itwill be understood that the cylinder may be made in a single piece andthe rods or bars 19 produced by slotting the cylinder longitudinally atnecessary intervals. The cylinder ends 18 run on rollers 22 which arepreferably provided with flanges 23 and which are journaled on bolts 2%having enlarged bearing portions 25 for the rollers and provided withnuts 26 to hold them in place. The bolts are fastened securely to theframe 10 at the ends thereof, as clearly shown in Fig. 2, and there arepreferably four of these rollers on each end, these being spaced so asto bear against opposite portions of the cylinder ends, so that thecylinder may revolve steadily.

The cylinder is suspended in such a way that the uppermost rods or bars19 lie flat against the drum 12 and between the upper knives of thedrum, so that sufficient space is left between these upper rods or barsand the bearing drum 15 to accommodate the severed veneer or wood. Asthe cutting drum 12 revolves it carries with it the ejecting cylinder,and as this describes at its periphery a different circle from thecutting drum, the rods 19 of the cylinder are gradually carried outwarduntil they lie beyond the edges of the knives 13, as shown in Fig. 2,and it will be seen that the material which has been forced from betweenthe knives and upon the rods is positively expelled.

As the drum and cylinder continue to revolve new rods are constantlycoming between the bearing and cutting drums and the operation ofejecting proceeds, as above described. A The bearing rollers 22 servemerely to steady the ejecting cylinder, but they permit it to hang uponthe cutting drum, and I do not limit my invention to the use of therollers, as the cylinder may be steadied in any other suitable manner.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. The combination, with a wood cutting machine,having a revoluble cutting drum with projecting knives and a bearingdrum for the knives, of an ejecting cylinder hung on the cutting drumand provided with parallel rods or bars to lie between the knives cf thecutting drum, substantially as described.

2. The combination, with the revoluble cutting drum having projectingperipheral knives and the bearing drum against which the knives revolve,of an ejecting cylinder hung on the cutting drum and provided withparallel peripheral rods to lie between the knives, and steadyingdevices for the ejecting cylinder, substantially as described.

3. The combination, with the revoluble cutting drum having projectingperipheral knives and a bearing drum for the knives, of the ejectingcylinder hung on the cutting drum and provided with parallel rods orbars to lie between the knives, and bearing rollers arranged within thecylinder to steady the same, substantially as described. 7 r

4. The combination, with the machine frame, the revoluble cutting drumhaving projecting peripheral knives and the bearing drum for the knives,of the ejecting cylinder having parallel peripheral rods to lie betweenthe knives and open circular ends, and the bearing rollers journaled onthe machine frame and turning against the inner edges of the cylinderends, substantially as described.

WILLIAM F. HUTOHIN SON.

Witnesses:

WALLACE A. Downs, WARREN B. HUTC-HINSON.

